Head covering



FIG. 1 is a front perspective view of a head covering illustrating my new design;

FIG. 2 is a rear elevation view of the head covering shown in FIG. 1.

FIG. 3 is a side elevation view of the head covering shown in FIG. 1.

FIG. 4 is a top plan view of the head covering illustrated in FIG. 1. 

The ornamental design for a head covering, substantially as shown. 